const template = `
<el-menu default-active="1-4-1" class="el-menu-vertical-demo" @open="handleOpen" @close="handleClose"
:collapse="isCollapse">
<el-submenu index="1">
  <template slot="title">
    <i class="el-icon-location"></i>
    <span slot="title">导航一</span>
  </template>
  <el-menu-item-group>
    <span slot="title">分组一</span>
    <el-menu-item index="1-1">选项1</el-menu-item>
    <el-menu-item index="1-2">选项2</el-menu-item>
  </el-menu-item-group>
  <el-menu-item-group title="分组2">
    <el-menu-item index="1-3">选项3</el-menu-item>
  </el-menu-item-group>
  <el-submenu index="1-4">
    <span slot="title">选项4</span>
    <el-menu-item index="1-4-1">选项1</el-menu-item>
  </el-submenu>
</el-submenu>
<el-menu-item index="2">
  <i class="el-icon-menu"></i>
  <span slot="title">导航二</span>
</el-menu-item>
<el-menu-item index="3" disabled>
  <i class="el-icon-document"></i>
  <span slot="title">导航三</span>
</el-menu-item>
<el-menu-item index="4">
  <i class="el-icon-setting"></i>
  <span slot="title">导航四</span>
</el-menu-item>
</el-menu>
`;

export default {
    name: "Navbar",
    template,
    data: function () {
        return {
          isCollapse: false
        }
      },
      methods: {
        handleOpen() {
    
        },
        handleClose() {
    
        }
      }
}